Been using SPG for some time and it works well in my world with one exception. Load and shoot within a few weeks is dandy, but load 'em up and wait 30-45 days and I start seeing oxidation on the bullets that in time starts to look and feel like corrosion. I typically use 30:1 alloy and sometimes 20:1, but they both do the same. I do not have this issue with ALOX or other lubes used for smokeless cartridges.

Any suggestions about a lube that shoots well and does not cause or promote oxidation?

Bullshop NASA.
I'm hearing good things about SPG tropical, but don't know how it holds up when loaded for quite a while. I have some of it, it's just that I so seldom load greasers, that I haven't got around to trying it yet.

Thanks Ranch, I have a bit of the NASA lube, will give it a whirl.

I like the nasa seems to work well whether loading smokeless or black.

I had some SPG lubed bullets in an outside storeroom. Ants found them and were eating the lube out of the grooves.

Some time ago when I was active in BPCR I noticed that pulled bullets had green in the lube grooves. Moreover, some felt glued in and came out hard with a loud crack. The lube bands were green. I conducted an experiment by coating several pieces of brass with various lubes and leaving them for about a month. Most turned green, but the amount varied. Unfortunately I didn't keep permanent notes. IIRC, the worst was a lube by a guy, since deceased, out of California. Sagebrush produced a lot of green. NASA lube was pretty good. Common lubes such as SPG were in the middle. Again, apologies for my sketchy memory. Discussions of this phenomenon seemed to point to animal fat like lanolin as the main culprit. Probably an interaction with the brass. When I was shooting actively, I tried to use fresh loads for competition. I also went to paper patching, which avoids the problem altogether. I had some good photos, but they were in Photobucket, so held for ransom which I won't pay.

Just sharing my experience, FWIW.

Paul

I guess you can call me a lubeahaulic. I make my own, always have. Just today I pulled the .40-70 from the safe and grabbed a box or loads that were marked 2008 that had a 68 gr load of 2F Goex express but it was not marked if I used a lube wad under the bullet. They shot just as good as they did the last time I used some from this box. when I was shooting today I pulled a bullet and picked the wad out to see if I was using a lube wad, mostly I don't use lube with a PP bullet and I saw no green.
My lube concoction is a mix of one of these waxes, Ozokerite wax, Soy wax or B-Wax and Vaseline to the hardness consistency I like.
If you see green corrosion the lube most likely has animal fat product and it it's off a shelf it most likely has a preservative in it or the natural animal fatty acid.
I also use a Tallow I make from Deer or Buffalo fat that I render out very dry and hard like used for candles and it does not turn the brass green with my mix.

Thanks for the info guys. I’ve not seen green in the grooves yet but lanolin sounds like a reasonable suspect. I was seeing oxidized lead surface on bullets, quite a bit actually. Pulled some a month or so back that had been loaded for about 6 months. Inside the cases and grooves was normal looking but that lead forward of the case was terrible.

Took a couple of bullets today, lubed one with SPG and the other with NASA then tucked them out of the way. Going to “lube” a couple of cases and do the same. Will let you know what develops.

Dan I use mainly 30:1 alloy but never noticed much discoloration..Only issue is long storage with lubed bullets drying out.. Jorge has a few boxes of Hindenburg's I sent him several years ago he's sending back for a remelt, seems easier than a relube job.

What?! Jorge doesn’t know how to boil bullets in hot water and pan lube?

I’m shocked.

I'll let him address that one !

Jorge eschews manual labor...

I use the world famous Black Magic Lube from sharpsguy, it wont turn green, go hard, or migrate to contaminate paper patches or wads.

And it smells good

I've been using DGL lube I picked up from the Shiloh Sharps folks in Big Timber for quite a few years now. I pan lube exclusively with it and have had 30:1 bullets sitting in the pan of DGL for several years at a time before using them and have never seen any signs of oxidation or anything out of the ordinary. I've also had loaded rounds with DGL sit for several years with no visible signs of oxidation.

You bet, especially melted and flying out with 105 grains of holy black!